import { View, ScrollView } from 'react-native';
import { useLocalSearchParams, router } from 'expo-router';
import { Text } from '@/components/ui/text';
import { Button } from '@/components/ui/button';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
import { FileText, Calendar, User, Share2, Download, ChevronRight } from '@/lib/icons';
import { MOCK_INVOICES } from '@/lib/mock-data';

const PRIMARY = '#ea580c';
const MOCK_ITEMS = [
  { description: 'Marketing Landing Page Package', qty: 1, unitPrice: 1000, total: 1000 },
  { description: 'Instagram Post Initial Design', qty: 4, unitPrice: 100, total: 400 },
];

export default function InvoiceDetailScreen() {
  const { id } = useLocalSearchParams<{ id: string }>();
  const invoice = MOCK_INVOICES.find((i) => i.id === id);

  return (
    <ScrollView
      className="flex-1 bg-[#f5f5f5]"
      contentContainerStyle={{ padding: 20, paddingBottom: 40 }}
      showsVerticalScrollIndicator={false}
    >
      <Card className="mb-4 overflow-hidden rounded-xl border border-border bg-white">
        <CardContent className="p-5">
          <View className="flex-row items-center justify-between">
            <View className="flex-row items-center gap-2">
              <FileText color={PRIMARY} size={22} strokeWidth={2} />
              <Text className="font-semibold text-gray-900">Invoice #{invoice?.invoiceNumber ?? id}</Text>
            </View>
            <View className="rounded-full bg-amber-500/20 px-2.5 py-1">
              <Text className="text-xs font-medium text-amber-700">{invoice?.status ?? 'Waiting'}</Text>
            </View>
          </View>
          <Text className="text-muted-foreground mt-2 text-sm">Amount due</Text>
          <Text className="mt-1 text-2xl font-bold text-gray-900">${invoice?.amount.toLocaleString() ?? '—'}</Text>
          <View className="mt-3 flex-row gap-4">
            <View className="flex-row items-center gap-1.5">
              <Calendar color="#71717a" size={16} strokeWidth={2} />
              <Text className="text-muted-foreground text-sm">Due {invoice?.dueDate ?? '—'}</Text>
            </View>
            <View className="flex-row items-center gap-1.5">
              <Calendar color="#71717a" size={16} strokeWidth={2} />
              <Text className="text-muted-foreground text-sm">Issued {invoice?.createdAt ?? '—'}</Text>
            </View>
          </View>
        </CardContent>
      </Card>

      <Card className="mb-4 overflow-hidden rounded-xl border border-border bg-white">
        <CardHeader className="pb-2">
          <View className="flex-row items-center gap-2">
            <User color="#71717a" size={18} strokeWidth={2} />
            <CardTitle className="text-base">Bill to</CardTitle>
          </View>
        </CardHeader>
        <CardContent>
          <Text className="font-medium text-gray-900">{invoice?.recipient ?? '—'}</Text>
          <Text className="text-muted-foreground text-sm">{invoice?.recipientEmail ?? '—'}</Text>
        </CardContent>
      </Card>

      <Card className="mb-4 overflow-hidden rounded-xl border border-border bg-white">
        <CardHeader className="pb-2">
          <CardTitle className="text-base">Items</CardTitle>
        </CardHeader>
        <CardContent className="gap-2">
          {MOCK_ITEMS.map((item, i) => (
            <View key={i} className="flex-row justify-between border-b border-border py-2 last:border-0">
              <Text className="text-gray-700">{item.description} × {item.qty}</Text>
              <Text className="font-medium text-gray-900">${item.total.toLocaleString()}</Text>
            </View>
          ))}
          <View className="mt-2 border-t border-border pt-3">
            <View className="flex-row justify-between">
              <Text className="font-semibold text-gray-900">Total</Text>
              <Text className="font-semibold text-gray-900">${invoice?.amount.toLocaleString() ?? '1,540'}</Text>
            </View>
          </View>
        </CardContent>
      </Card>

      <View className="flex-row gap-3">
        <Button variant="outline" className="min-h-12 flex-1 rounded-xl border-border" onPress={() => {}}>
          <Share2 color={PRIMARY} size={20} strokeWidth={2} />
          <Text className="ml-2 font-medium text-gray-700">Share</Text>
        </Button>
        <Button variant="outline" className="min-h-12 flex-1 rounded-xl border-border" onPress={() => {}}>
          <Download color={PRIMARY} size={20} strokeWidth={2} />
          <Text className="ml-2 font-medium text-gray-700">PDF</Text>
        </Button>
      </View>
      <Button variant="ghost" className="mt-4 rounded-xl" onPress={() => router.back()}>
        <ChevronRight className="rotate-180" color="#71717a" size={20} strokeWidth={2} />
        <Text className="ml-2 font-medium text-muted-foreground">Back</Text>
      </Button>
    </ScrollView>
  );
}